Across the universe : 

Euclid, a @europeanspaceagency telescope with NASA contributions, uncovered hidden regions of star formation in Messier 78 (the bright region in the center) for the first time and mapped gas and dust in exceptional detail. Using its infrared camera, the telescope looked through clouds that usually hide the smaller objects in this star nursery. This image and four others recently released showcase Euclid’s ability to explore two large-scale cosmic mysteries: dark matter and dark energy.

While scientists have measured that dark matter makes up about 27% of the cosmos, they’re not sure what it is. Scientists think dark matter exists in a vast, web-like structure that winds through the whole universe – a gravitational scaffold that attracts most of the cosmos’ normal matter. They’ve determined that dark matter isn’t composed of known particles of matter because the universe would look quite different if it were.

Observations of the universe have shown that the universe is expanding, and that it’s expanding faster now than it did in the past. We don’t know why, but the leading explanation is that the universe contains something that has a repulsive gravitational effect – it pushes the universe apart instead of pulling it back together. This phenomenon is called dark energy.

By 2030, Euclid will create a cosmic map that covers almost a third of the sky. Scientists will then chart the presence of dark matter with higher precision than ever before. They also could use this map to study how dark energy’s strength has changed over time.

Image description: Deep orange clouds of gas and dust swirl diagonally across the image. At center, bright stars give the region a purple hue. In the background is the black backdrop of space, dotted with bright stars and galaxies.

Credit: ESA/Euclid/Euclid Consortium/NASA, image processing by J.-C. Cuillandre (CEA Paris-Saclay), G. Anselmi; CC BY-SA 3.0 IGO or ESA Standard License

#NASA #Nebula #Telescope #Space #Stars

[ INFORMATION DATA: 07 June 2024 ]

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